The filter for your air handler is one of the most important components for both the health of you and your family as well as that of your air conditioning system. Filters have MERV numbers, which stands for minimum efficiency reporting value. The MERV describes the smallest particle size the filter can capture. The scale runs from 1 to 16 for residential HVAC filters, and higher numbers indicate better filtration.
The EPA estimates that homes may have five times the indoor air pollution than the outdoors, but you can improve your indoor air quality by upgrading the filters you use for the air handler. If you’re using the fiberglass filters, you’re likely using filters with MERV ratings of 2 to 4, but if you use the more expensive pleated filters, your rating will likely increase to the 5 to 8 range.
Air filtration in your home captures many airborne particles that can be irritating, like pollen, dust and mold spores. If anyone in your home has allergies or asthma, increasing the density can relieve the symptoms. If you know the specific health triggers, you can choose the filter best suited to trapping those particles.
Use the following information to judge the filter that will best trap the irritating particles:
- MERV 1-4: 10 microns and over, like mold spores
- MERV 5-8: 3 microns and over, such as bacteria
- MERV 9-12: 1 micron and over
- MERV 13-16: 0.3 microns
When using filters over 8, check with an HVAC professional to be sure that the filter will let enough air through the air handler. Dense filters slow down the passage of air through your system. If you increase the density, you’ll also have to clean or change them more frequently than lower-rated MERV filters.
If you would like to learn more about the MERV numbers and air filtration for your home, contact Robert R. McGill Air Conditioning. We’ve been providing HVAC services and air filtration systems throughout eastern Palm Beach, northern Broward and southern Martin counties since 1979.
Our goal is to help educate our customers about energy and home comfort issues (specific to HVAC systems). For more information about MERV numbers and other HVAC topics, download our free Home Comfort Resource guide.
Our proficient air conditioning service staff is here to assist you if you live in Coconut Creek, Coral Springs, and Deerfield Beach. However we also give ac repair service in Parkland, Pembroke Pines, and Pompano Beach. AC is most indispensable equipment for heat and whenever it is crippled then please don’t hesitate to contact with us for a free fixation on your AC unit.
Filed under: Air Filters
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